I am overhauling a 1950 F1 for a friend whose grandfather bought the truck new. Engine is no problem, but the 59T 7006 DGD N1 transmission is. Four speed with tractor low, all straight cut gears, and no synchros. It's got a bad cluster gear, reverse idler, and 3rd/4th gears. Useable but very badly worn. That description fits me after trying to find parts for this trans. Any help there? If not, what can I use for a drop in swap with tractor low and maybe some synchronizers and parts availability? Thanks! Steve BTW, how may one owner 1950 F1's out there?